How should sodium hydroxide be stored to ensure safety and longevity?

Sodium hydroxide should be stored in a cool, dry place away from moisture and incompatible materials. It should be kept in a tightly sealed container to prevent exposure to air and moisture, which can cause it to degrade. Additionally, it should be stored away from acids and other reactive substances to prevent dangerous reactions. Proper labeling and storage away from heat sources are also important for safety and longevity.